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Given mass of tungsten, W = 415 g
Molar mass of tungsten, W = 183.85 g/mol
Calculating moles of tungsten from mass and molar mass:

<span>we know that each
element has an unique spectra and it can be used to identify the
element. it shows that the energy levels of the electrons and different colors are the result of different wavelengths.
hope it helps
</span>
Answer:
Phthalates.
Perfluoroalkyl chemicals (PFCs)
Perchlorate
Artificial food colors
Nitrates and nitrites
Explanation:
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